./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Piecewise.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/Piecewise.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ac2fbc3b92c237eee672d002679ee7a51e4ecff20f91c05c8145e18adc82f593 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-19 00:12:57,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-19 00:12:57,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-19 00:12:57,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-19 00:12:57,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-19 00:12:57,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-19 00:12:57,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-19 00:12:57,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-19 00:12:57,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-19 00:12:57,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-19 00:12:57,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-19 00:12:57,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-19 00:12:57,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-19 00:12:57,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-19 00:12:57,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-19 00:12:57,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-19 00:12:57,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-19 00:12:57,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-19 00:12:57,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-19 00:12:57,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-19 00:12:57,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-19 00:12:57,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-19 00:12:57,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-19 00:12:57,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-19 00:12:57,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-19 00:12:57,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-19 00:12:57,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-19 00:12:57,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-19 00:12:57,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-19 00:12:57,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-19 00:12:57,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-19 00:12:57,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-19 00:12:57,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-19 00:12:57,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-19 00:12:57,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-19 00:12:57,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-19 00:12:57,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-19 00:12:57,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-19 00:12:57,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-19 00:12:57,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-19 00:12:57,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-19 00:12:57,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-19 00:12:57,242 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-19 00:12:57,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-19 00:12:57,243 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-19 00:12:57,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-19 00:12:57,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-19 00:12:57,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-19 00:12:57,244 INFO L138 SettingsManager]: * Use SBE=true [2023-02-19 00:12:57,244 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-19 00:12:57,245 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-19 00:12:57,245 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-19 00:12:57,245 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-19 00:12:57,245 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-19 00:12:57,246 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-19 00:12:57,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-19 00:12:57,246 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-19 00:12:57,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-19 00:12:57,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-19 00:12:57,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-19 00:12:57,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-19 00:12:57,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-19 00:12:57,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-19 00:12:57,247 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-19 00:12:57,247 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-19 00:12:57,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-19 00:12:57,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-19 00:12:57,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-19 00:12:57,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-19 00:12:57,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-19 00:12:57,249 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-19 00:12:57,249 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac2fbc3b92c237eee672d002679ee7a51e4ecff20f91c05c8145e18adc82f593 [2023-02-19 00:12:57,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-19 00:12:57,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-19 00:12:57,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-19 00:12:57,441 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-19 00:12:57,441 INFO L275 PluginConnector]: CDTParser initialized [2023-02-19 00:12:57,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Piecewise.c [2023-02-19 00:12:58,396 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-19 00:12:58,518 INFO L351 CDTParser]: Found 1 translation units. [2023-02-19 00:12:58,518 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Piecewise.c [2023-02-19 00:12:58,522 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c9c5afb5/e5dc35b86e5a47a49eaf8d3e0025157b/FLAGb526e6f0a [2023-02-19 00:12:58,531 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c9c5afb5/e5dc35b86e5a47a49eaf8d3e0025157b [2023-02-19 00:12:58,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-19 00:12:58,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-19 00:12:58,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-19 00:12:58,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-19 00:12:58,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-19 00:12:58,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 12:12:58" (1/1) ... [2023-02-19 00:12:58,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d2bfa73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:12:58, skipping insertion in model container [2023-02-19 00:12:58,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 12:12:58" (1/1) ... [2023-02-19 00:12:58,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-19 00:12:58,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-19 00:12:58,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-19 00:12:58,684 INFO L203 MainTranslator]: Completed pre-run [2023-02-19 00:12:58,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-19 00:12:58,700 INFO L208 MainTranslator]: Completed translation [2023-02-19 00:12:58,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:12:58 WrapperNode [2023-02-19 00:12:58,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-19 00:12:58,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-19 00:12:58,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-19 00:12:58,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-19 00:12:58,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:12:58" (1/1) ... [2023-02-19 00:12:58,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:12:58" (1/1) ... [2023-02-19 00:12:58,720 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2023-02-19 00:12:58,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-19 00:12:58,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-19 00:12:58,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-19 00:12:58,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-19 00:12:58,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:12:58" (1/1) ... [2023-02-19 00:12:58,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:12:58" (1/1) ... [2023-02-19 00:12:58,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:12:58" (1/1) ... [2023-02-19 00:12:58,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:12:58" (1/1) ... [2023-02-19 00:12:58,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:12:58" (1/1) ... [2023-02-19 00:12:58,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:12:58" (1/1) ... [2023-02-19 00:12:58,731 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:12:58" (1/1) ... [2023-02-19 00:12:58,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:12:58" (1/1) ... [2023-02-19 00:12:58,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-19 00:12:58,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-19 00:12:58,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-19 00:12:58,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-19 00:12:58,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:12:58" (1/1) ... [2023-02-19 00:12:58,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:12:58,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:12:58,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:12:58,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-02-19 00:12:58,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-19 00:12:58,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-19 00:12:58,833 INFO L235 CfgBuilder]: Building ICFG [2023-02-19 00:12:58,835 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-19 00:12:58,910 INFO L276 CfgBuilder]: Performing block encoding [2023-02-19 00:12:58,914 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-19 00:12:58,914 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-19 00:12:58,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 12:12:58 BoogieIcfgContainer [2023-02-19 00:12:58,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-19 00:12:58,916 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-19 00:12:58,917 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-19 00:12:58,919 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-19 00:12:58,919 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-19 00:12:58,920 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.02 12:12:58" (1/3) ... [2023-02-19 00:12:58,920 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41d1f28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.02 12:12:58, skipping insertion in model container [2023-02-19 00:12:58,920 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-19 00:12:58,920 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:12:58" (2/3) ... [2023-02-19 00:12:58,921 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41d1f28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.02 12:12:58, skipping insertion in model container [2023-02-19 00:12:58,921 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-19 00:12:58,921 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 12:12:58" (3/3) ... [2023-02-19 00:12:58,922 INFO L332 chiAutomizerObserver]: Analyzing ICFG Piecewise.c [2023-02-19 00:12:58,956 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-19 00:12:58,956 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-19 00:12:58,956 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-19 00:12:58,956 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-19 00:12:58,956 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-19 00:12:58,956 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-19 00:12:58,957 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-19 00:12:58,957 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-19 00:12:58,961 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:12:58,978 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-19 00:12:58,978 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-19 00:12:58,978 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-19 00:12:58,982 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-19 00:12:58,982 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-19 00:12:58,982 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-19 00:12:58,983 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:12:58,983 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-19 00:12:58,983 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-19 00:12:58,984 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-19 00:12:58,984 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-19 00:12:58,984 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-19 00:12:58,989 INFO L748 eck$LassoCheckResult]: Stem: 5#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 4#L26-2true [2023-02-19 00:12:58,989 INFO L750 eck$LassoCheckResult]: Loop: 4#L26-2true assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 6#L23true assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 4#L26-2true [2023-02-19 00:12:58,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:12:58,992 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-19 00:12:59,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:12:59,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549820909] [2023-02-19 00:12:59,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:12:59,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:12:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:12:59,051 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:12:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:12:59,063 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:12:59,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:12:59,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2023-02-19 00:12:59,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:12:59,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443617022] [2023-02-19 00:12:59,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:12:59,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:12:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:12:59,074 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:12:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:12:59,078 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:12:59,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:12:59,079 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-02-19 00:12:59,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:12:59,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122407462] [2023-02-19 00:12:59,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:12:59,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:12:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:12:59,084 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:12:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:12:59,088 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:12:59,106 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:12:59,106 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:12:59,106 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:12:59,107 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:12:59,107 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-19 00:12:59,107 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:12:59,107 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:12:59,107 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:12:59,107 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration1_Loop [2023-02-19 00:12:59,107 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:12:59,108 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:12:59,119 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:12:59,125 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:12:59,127 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:12:59,137 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:12:59,137 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-19 00:12:59,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:12:59,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:12:59,141 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:12:59,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-02-19 00:12:59,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:12:59,144 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:12:59,168 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:12:59,169 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:12:59,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-02-19 00:12:59,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:12:59,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:12:59,182 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:12:59,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-02-19 00:12:59,186 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:12:59,186 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:12:59,227 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:12:59,227 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:12:59,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-02-19 00:12:59,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:12:59,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:12:59,247 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:12:59,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-02-19 00:12:59,266 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:12:59,267 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:12:59,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-02-19 00:12:59,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:12:59,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:12:59,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:12:59,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-02-19 00:12:59,308 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-19 00:12:59,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:12:59,339 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-19 00:12:59,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-02-19 00:12:59,343 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:12:59,343 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:12:59,343 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:12:59,343 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:12:59,343 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-19 00:12:59,343 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:12:59,343 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:12:59,343 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:12:59,343 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration1_Loop [2023-02-19 00:12:59,343 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:12:59,343 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:12:59,345 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:12:59,350 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:12:59,367 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:12:59,371 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:12:59,386 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-19 00:12:59,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:12:59,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:12:59,395 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:12:59,397 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-19 00:12:59,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-02-19 00:12:59,403 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:12:59,404 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:12:59,404 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:12:59,404 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:12:59,407 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-19 00:12:59,407 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-19 00:12:59,426 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-19 00:12:59,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-02-19 00:12:59,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:12:59,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:12:59,430 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:12:59,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-02-19 00:12:59,434 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-19 00:12:59,440 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:12:59,440 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:12:59,440 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:12:59,440 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:12:59,442 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-19 00:12:59,442 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-19 00:12:59,459 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-19 00:12:59,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-02-19 00:12:59,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:12:59,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:12:59,466 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:12:59,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-02-19 00:12:59,502 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-19 00:12:59,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:12:59,508 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-19 00:12:59,509 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:12:59,509 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-02-19 00:12:59,509 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:12:59,512 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-02-19 00:12:59,512 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-19 00:12:59,529 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-19 00:12:59,533 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-02-19 00:12:59,533 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-19 00:12:59,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:12:59,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:12:59,571 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:12:59,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-02-19 00:12:59,573 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-19 00:12:59,573 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-19 00:12:59,573 INFO L513 LassoAnalysis]: Proved termination. [2023-02-19 00:12:59,574 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2023-02-19 00:12:59,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-02-19 00:12:59,581 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-19 00:12:59,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:12:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:12:59,608 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-19 00:12:59,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:12:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:12:59,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-19 00:12:59,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:12:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-19 00:12:59,642 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-19 00:12:59,643 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:12:59,675 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 38 states and 49 transitions. Complement of second has 8 states. [2023-02-19 00:12:59,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-19 00:12:59,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:12:59,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2023-02-19 00:12:59,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 2 letters. [2023-02-19 00:12:59,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:12:59,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 4 letters. Loop has 2 letters. [2023-02-19 00:12:59,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:12:59,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 4 letters. [2023-02-19 00:12:59,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:12:59,683 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 49 transitions. [2023-02-19 00:12:59,685 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2023-02-19 00:12:59,686 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 14 states and 20 transitions. [2023-02-19 00:12:59,687 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2023-02-19 00:12:59,687 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-02-19 00:12:59,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2023-02-19 00:12:59,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-19 00:12:59,688 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2023-02-19 00:12:59,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2023-02-19 00:12:59,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-02-19 00:12:59,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:12:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2023-02-19 00:12:59,703 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2023-02-19 00:12:59,703 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2023-02-19 00:12:59,703 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-19 00:12:59,704 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2023-02-19 00:12:59,704 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2023-02-19 00:12:59,704 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-19 00:12:59,704 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-19 00:12:59,705 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-19 00:12:59,705 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-19 00:12:59,705 INFO L748 eck$LassoCheckResult]: Stem: 90#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 91#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 97#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 87#L23 [2023-02-19 00:12:59,705 INFO L750 eck$LassoCheckResult]: Loop: 87#L23 assume !(main_~q~0#1 < main_~p~0#1); 92#L26 assume !(main_~p~0#1 < main_~q~0#1); 86#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 87#L23 [2023-02-19 00:12:59,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:12:59,706 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-02-19 00:12:59,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:12:59,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802479775] [2023-02-19 00:12:59,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:12:59,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:12:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:12:59,710 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:12:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:12:59,712 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:12:59,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:12:59,712 INFO L85 PathProgramCache]: Analyzing trace with hash 45829, now seen corresponding path program 1 times [2023-02-19 00:12:59,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:12:59,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158032929] [2023-02-19 00:12:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:12:59,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:12:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:12:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-19 00:12:59,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-19 00:12:59,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158032929] [2023-02-19 00:12:59,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158032929] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-19 00:12:59,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-19 00:12:59,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-19 00:12:59,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133238153] [2023-02-19 00:12:59,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-19 00:12:59,743 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-02-19 00:12:59,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-19 00:12:59,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-19 00:12:59,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-19 00:12:59,746 INFO L87 Difference]: Start difference. First operand 13 states and 19 transitions. cyclomatic complexity: 9 Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:12:59,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-19 00:12:59,756 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2023-02-19 00:12:59,756 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2023-02-19 00:12:59,756 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-19 00:12:59,756 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 13 transitions. [2023-02-19 00:12:59,757 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-02-19 00:12:59,757 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-02-19 00:12:59,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2023-02-19 00:12:59,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-19 00:12:59,757 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2023-02-19 00:12:59,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2023-02-19 00:12:59,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-02-19 00:12:59,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:12:59,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2023-02-19 00:12:59,758 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2023-02-19 00:12:59,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-19 00:12:59,759 INFO L428 stractBuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2023-02-19 00:12:59,759 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-19 00:12:59,759 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 12 transitions. [2023-02-19 00:12:59,760 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-19 00:12:59,760 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-19 00:12:59,760 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-19 00:12:59,760 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-02-19 00:12:59,760 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-19 00:12:59,761 INFO L748 eck$LassoCheckResult]: Stem: 126#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 127#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 128#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 123#L23 assume !(main_~q~0#1 < main_~p~0#1); 125#L26 [2023-02-19 00:12:59,761 INFO L750 eck$LassoCheckResult]: Loop: 125#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 120#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 121#L23 assume !(main_~q~0#1 < main_~p~0#1); 125#L26 [2023-02-19 00:12:59,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:12:59,761 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2023-02-19 00:12:59,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:12:59,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393985787] [2023-02-19 00:12:59,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:12:59,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:12:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:12:59,765 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:12:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:12:59,767 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:12:59,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:12:59,767 INFO L85 PathProgramCache]: Analyzing trace with hash 48407, now seen corresponding path program 1 times [2023-02-19 00:12:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:12:59,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090468471] [2023-02-19 00:12:59,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:12:59,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:12:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:12:59,771 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:12:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:12:59,773 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:12:59,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:12:59,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722640, now seen corresponding path program 1 times [2023-02-19 00:12:59,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:12:59,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814088290] [2023-02-19 00:12:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:12:59,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:12:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:12:59,779 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:12:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:12:59,793 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:12:59,795 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:12:59,795 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:12:59,795 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:12:59,795 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:12:59,795 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-19 00:12:59,795 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:12:59,795 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:12:59,795 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:12:59,796 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration3_Loop [2023-02-19 00:12:59,796 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:12:59,796 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:12:59,797 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:12:59,798 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:12:59,799 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:12:59,819 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:12:59,819 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-19 00:12:59,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:12:59,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:12:59,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-02-19 00:12:59,821 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:12:59,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-02-19 00:12:59,825 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:12:59,825 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:12:59,836 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:12:59,836 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:12:59,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-02-19 00:12:59,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:12:59,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:12:59,840 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:12:59,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-02-19 00:12:59,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:12:59,845 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:12:59,873 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:12:59,873 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:12:59,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2023-02-19 00:12:59,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:12:59,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:12:59,879 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:12:59,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-02-19 00:12:59,882 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:12:59,882 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:12:59,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-02-19 00:12:59,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:12:59,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:12:59,918 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:12:59,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-02-19 00:12:59,922 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-19 00:12:59,922 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:13:00,069 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-19 00:13:00,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-02-19 00:13:00,075 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:13:00,075 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:13:00,075 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:13:00,075 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:13:00,075 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-19 00:13:00,075 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,076 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:13:00,076 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:13:00,076 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration3_Loop [2023-02-19 00:13:00,076 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:13:00,076 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:13:00,079 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:00,082 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:00,084 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:00,087 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:13:00,087 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-19 00:13:00,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:00,088 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:00,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-02-19 00:13:00,092 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-19 00:13:00,097 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:13:00,098 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:13:00,098 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:13:00,098 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:13:00,099 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-19 00:13:00,099 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-19 00:13:00,116 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-19 00:13:00,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:00,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:00,137 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:00,147 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-19 00:13:00,153 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:13:00,153 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-19 00:13:00,153 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:13:00,153 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-02-19 00:13:00,153 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:13:00,156 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-02-19 00:13:00,156 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-19 00:13:00,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-02-19 00:13:00,172 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-19 00:13:00,175 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-02-19 00:13:00,175 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-19 00:13:00,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:00,176 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:00,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-02-19 00:13:00,179 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-19 00:13:00,179 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-19 00:13:00,179 INFO L513 LassoAnalysis]: Proved termination. [2023-02-19 00:13:00,179 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0#1) = 1*ULTIMATE.start_main_~p~0#1 Supporting invariants [] [2023-02-19 00:13:00,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:00,184 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-19 00:13:00,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:13:00,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-19 00:13:00,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:13:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:13:00,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-19 00:13:00,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:13:00,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-19 00:13:00,221 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-02-19 00:13:00,221 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:00,234 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 17 states and 21 transitions. Complement of second has 7 states. [2023-02-19 00:13:00,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-19 00:13:00,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:00,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-02-19 00:13:00,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2023-02-19 00:13:00,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:00,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2023-02-19 00:13:00,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:00,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2023-02-19 00:13:00,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:00,236 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2023-02-19 00:13:00,236 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-19 00:13:00,236 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 14 states and 18 transitions. [2023-02-19 00:13:00,236 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-02-19 00:13:00,237 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2023-02-19 00:13:00,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2023-02-19 00:13:00,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-19 00:13:00,237 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 18 transitions. [2023-02-19 00:13:00,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2023-02-19 00:13:00,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-02-19 00:13:00,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2023-02-19 00:13:00,238 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 17 transitions. [2023-02-19 00:13:00,238 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2023-02-19 00:13:00,238 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-19 00:13:00,238 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2023-02-19 00:13:00,238 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-19 00:13:00,238 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-19 00:13:00,238 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-19 00:13:00,239 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2023-02-19 00:13:00,239 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-19 00:13:00,239 INFO L748 eck$LassoCheckResult]: Stem: 196#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 197#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 201#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 194#L23 assume !(main_~q~0#1 < main_~p~0#1); 203#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 200#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 202#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 191#L26-2 [2023-02-19 00:13:00,239 INFO L750 eck$LassoCheckResult]: Loop: 191#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 192#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 191#L26-2 [2023-02-19 00:13:00,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:00,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722638, now seen corresponding path program 1 times [2023-02-19 00:13:00,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:13:00,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978166907] [2023-02-19 00:13:00,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:13:00,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:13:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:00,244 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:13:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:00,248 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:13:00,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:00,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 2 times [2023-02-19 00:13:00,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:13:00,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233876025] [2023-02-19 00:13:00,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:13:00,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:13:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:00,251 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:13:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:00,253 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:13:00,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:00,253 INFO L85 PathProgramCache]: Analyzing trace with hash 642700593, now seen corresponding path program 2 times [2023-02-19 00:13:00,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:13:00,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731529683] [2023-02-19 00:13:00,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:13:00,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:13:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:00,258 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:13:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:00,262 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:13:00,264 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:13:00,264 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:13:00,264 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:13:00,264 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:13:00,264 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-19 00:13:00,264 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,264 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:13:00,264 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:13:00,264 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration4_Loop [2023-02-19 00:13:00,264 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:13:00,264 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:13:00,265 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:00,266 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:00,277 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:00,279 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:13:00,279 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-19 00:13:00,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:00,283 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:00,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:13:00,292 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:13:00,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-02-19 00:13:00,317 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:13:00,317 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:13:00,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:00,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:00,323 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:00,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-02-19 00:13:00,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:13:00,326 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:13:00,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:00,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:00,352 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:00,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-02-19 00:13:00,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-19 00:13:00,356 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:13:00,379 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-19 00:13:00,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:00,396 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:13:00,396 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:13:00,396 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:13:00,396 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:13:00,396 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-19 00:13:00,396 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,396 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:13:00,396 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:13:00,396 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration4_Loop [2023-02-19 00:13:00,397 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:13:00,397 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:13:00,398 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:00,399 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:00,400 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:00,402 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:13:00,402 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-19 00:13:00,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:00,403 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:00,410 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-19 00:13:00,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:13:00,416 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-19 00:13:00,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:13:00,416 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-02-19 00:13:00,416 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:13:00,419 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-02-19 00:13:00,419 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-19 00:13:00,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-02-19 00:13:00,444 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-19 00:13:00,448 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-19 00:13:00,448 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-19 00:13:00,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:00,461 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:00,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-02-19 00:13:00,463 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-19 00:13:00,463 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-19 00:13:00,463 INFO L513 LassoAnalysis]: Proved termination. [2023-02-19 00:13:00,463 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2023-02-19 00:13:00,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-02-19 00:13:00,467 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-19 00:13:00,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:13:00,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-19 00:13:00,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:13:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:13:00,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-19 00:13:00,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:13:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-19 00:13:00,495 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-19 00:13:00,495 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:00,513 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 35 transitions. Complement of second has 5 states. [2023-02-19 00:13:00,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-19 00:13:00,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:00,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-02-19 00:13:00,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2023-02-19 00:13:00,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:00,517 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2023-02-19 00:13:00,517 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:00,517 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2023-02-19 00:13:00,517 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:00,517 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2023-02-19 00:13:00,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-19 00:13:00,520 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 24 states and 31 transitions. [2023-02-19 00:13:00,520 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-02-19 00:13:00,520 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2023-02-19 00:13:00,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2023-02-19 00:13:00,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-19 00:13:00,521 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-02-19 00:13:00,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2023-02-19 00:13:00,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2023-02-19 00:13:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:00,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2023-02-19 00:13:00,523 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 29 transitions. [2023-02-19 00:13:00,523 INFO L428 stractBuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2023-02-19 00:13:00,523 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-19 00:13:00,523 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2023-02-19 00:13:00,524 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-19 00:13:00,524 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-19 00:13:00,524 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-19 00:13:00,525 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1] [2023-02-19 00:13:00,525 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-19 00:13:00,525 INFO L748 eck$LassoCheckResult]: Stem: 286#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 287#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 279#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 280#L23 assume !(main_~q~0#1 < main_~p~0#1); 293#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 290#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 291#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 292#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 284#L23 assume !(main_~q~0#1 < main_~p~0#1); 285#L26 [2023-02-19 00:13:00,525 INFO L750 eck$LassoCheckResult]: Loop: 285#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 288#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 297#L23 assume !(main_~q~0#1 < main_~p~0#1); 285#L26 [2023-02-19 00:13:00,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:00,526 INFO L85 PathProgramCache]: Analyzing trace with hash 642700595, now seen corresponding path program 3 times [2023-02-19 00:13:00,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:13:00,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023109421] [2023-02-19 00:13:00,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:13:00,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:13:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:00,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:13:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:00,548 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:13:00,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:00,551 INFO L85 PathProgramCache]: Analyzing trace with hash 48407, now seen corresponding path program 2 times [2023-02-19 00:13:00,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:13:00,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682166876] [2023-02-19 00:13:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:13:00,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:13:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:00,555 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:13:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:00,559 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:13:00,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:00,560 INFO L85 PathProgramCache]: Analyzing trace with hash -270761307, now seen corresponding path program 4 times [2023-02-19 00:13:00,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:13:00,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381240543] [2023-02-19 00:13:00,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:13:00,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:13:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:00,568 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:13:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:00,580 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:13:00,584 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:13:00,584 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:13:00,585 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:13:00,585 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:13:00,585 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-19 00:13:00,585 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,585 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:13:00,585 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:13:00,585 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration5_Loop [2023-02-19 00:13:00,585 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:13:00,585 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:13:00,586 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:00,588 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:00,589 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:00,592 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:13:00,594 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-19 00:13:00,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:00,601 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:00,609 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:13:00,609 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:13:00,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-02-19 00:13:00,629 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:13:00,630 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:13:00,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:00,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:00,648 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:00,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-02-19 00:13:00,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:13:00,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:13:00,673 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:13:00,673 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:13:00,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:00,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:00,691 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:00,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-02-19 00:13:00,695 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:13:00,695 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:13:00,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:00,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:00,733 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:00,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-02-19 00:13:00,736 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-19 00:13:00,736 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:13:00,855 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-19 00:13:00,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:00,859 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:13:00,859 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:13:00,859 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:13:00,859 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:13:00,860 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-19 00:13:00,860 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,860 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:13:00,860 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:13:00,860 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration5_Loop [2023-02-19 00:13:00,860 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:13:00,860 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:13:00,861 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:00,862 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:00,863 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:00,867 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:13:00,869 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-19 00:13:00,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:00,871 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:00,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-02-19 00:13:00,874 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-19 00:13:00,880 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:13:00,880 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:13:00,880 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:13:00,880 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:13:00,882 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-19 00:13:00,882 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-19 00:13:00,898 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-19 00:13:00,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:00,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:00,903 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:00,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-02-19 00:13:00,907 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-19 00:13:00,915 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:13:00,915 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:13:00,915 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:13:00,915 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:13:00,931 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-19 00:13:00,931 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-19 00:13:00,945 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-19 00:13:00,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:00,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:00,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:00,970 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:00,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-02-19 00:13:00,974 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-19 00:13:00,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:13:00,980 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-19 00:13:00,980 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:13:00,980 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-02-19 00:13:00,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:13:00,982 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-02-19 00:13:00,982 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-19 00:13:00,995 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-19 00:13:01,012 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-02-19 00:13:01,012 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-19 00:13:01,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:01,016 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:01,019 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-19 00:13:01,019 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-19 00:13:01,019 INFO L513 LassoAnalysis]: Proved termination. [2023-02-19 00:13:01,019 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0#1) = 1*ULTIMATE.start_main_~p~0#1 Supporting invariants [] [2023-02-19 00:13:01,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-02-19 00:13:01,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:01,022 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-19 00:13:01,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:13:01,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-19 00:13:01,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:13:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:13:01,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-19 00:13:01,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:13:01,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-19 00:13:01,050 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-02-19 00:13:01,050 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:01,063 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 29 states and 36 transitions. Complement of second has 7 states. [2023-02-19 00:13:01,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-19 00:13:01,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-02-19 00:13:01,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2023-02-19 00:13:01,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:01,064 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-19 00:13:01,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:13:01,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-19 00:13:01,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:13:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:13:01,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-19 00:13:01,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:13:01,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-19 00:13:01,089 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2023-02-19 00:13:01,089 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:01,103 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 35 transitions. Complement of second has 7 states. [2023-02-19 00:13:01,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-19 00:13:01,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:01,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2023-02-19 00:13:01,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 9 letters. Loop has 3 letters. [2023-02-19 00:13:01,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:01,104 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-19 00:13:01,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:13:01,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-19 00:13:01,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:13:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:13:01,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-19 00:13:01,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:13:01,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-19 00:13:01,143 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-02-19 00:13:01,143 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:01,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:01,160 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 43 transitions. Complement of second has 6 states. [2023-02-19 00:13:01,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-19 00:13:01,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:01,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2023-02-19 00:13:01,161 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2023-02-19 00:13:01,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:01,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 12 letters. Loop has 3 letters. [2023-02-19 00:13:01,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:01,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 6 letters. [2023-02-19 00:13:01,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:01,163 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2023-02-19 00:13:01,163 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-02-19 00:13:01,164 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 26 states and 34 transitions. [2023-02-19 00:13:01,164 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2023-02-19 00:13:01,164 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-02-19 00:13:01,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 34 transitions. [2023-02-19 00:13:01,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-19 00:13:01,164 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 34 transitions. [2023-02-19 00:13:01,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 34 transitions. [2023-02-19 00:13:01,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 17. [2023-02-19 00:13:01,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:01,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2023-02-19 00:13:01,166 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2023-02-19 00:13:01,166 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2023-02-19 00:13:01,166 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-02-19 00:13:01,166 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 22 transitions. [2023-02-19 00:13:01,167 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-19 00:13:01,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:01,167 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-19 00:13:01,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:01,180 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-19 00:13:01,181 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2023-02-19 00:13:01,181 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2023-02-19 00:13:01,181 INFO L748 eck$LassoCheckResult]: Stem: 548#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 549#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 540#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 542#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 547#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 545#L23 assume !(main_~q~0#1 < main_~p~0#1); 546#L26 [2023-02-19 00:13:01,181 INFO L750 eck$LassoCheckResult]: Loop: 546#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 543#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 544#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 554#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 553#L23 assume !(main_~q~0#1 < main_~p~0#1); 546#L26 [2023-02-19 00:13:01,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:01,182 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2023-02-19 00:13:01,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:13:01,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2782015] [2023-02-19 00:13:01,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:13:01,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:13:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:01,186 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:13:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:01,188 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:13:01,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:01,189 INFO L85 PathProgramCache]: Analyzing trace with hash 46517562, now seen corresponding path program 1 times [2023-02-19 00:13:01,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:13:01,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792784634] [2023-02-19 00:13:01,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:13:01,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:13:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:01,192 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:13:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:01,195 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:13:01,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:01,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1606994736, now seen corresponding path program 5 times [2023-02-19 00:13:01,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:13:01,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852533161] [2023-02-19 00:13:01,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:13:01,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:13:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:01,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:13:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:01,204 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:13:01,208 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:13:01,208 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:13:01,208 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:13:01,208 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:13:01,208 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-19 00:13:01,208 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,208 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:13:01,208 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:13:01,208 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration6_Loop [2023-02-19 00:13:01,209 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:13:01,209 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:13:01,209 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:01,210 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:01,211 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:01,214 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:13:01,214 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-19 00:13:01,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:01,215 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:01,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:13:01,232 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:13:01,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-02-19 00:13:01,243 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:13:01,243 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:13:01,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:01,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:01,281 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:01,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-02-19 00:13:01,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:13:01,284 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:13:01,295 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:13:01,296 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:13:01,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:01,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:01,299 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:01,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-02-19 00:13:01,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:13:01,302 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:13:01,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2023-02-19 00:13:01,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:01,324 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:01,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-02-19 00:13:01,327 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-19 00:13:01,327 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:13:01,389 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-19 00:13:01,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:01,407 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:13:01,407 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:13:01,407 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:13:01,407 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:13:01,407 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-19 00:13:01,407 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,407 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:13:01,407 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:13:01,407 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration6_Loop [2023-02-19 00:13:01,407 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:13:01,408 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:13:01,408 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:01,409 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:01,410 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:01,413 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:13:01,413 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-19 00:13:01,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:01,433 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:01,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-02-19 00:13:01,465 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-19 00:13:01,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:13:01,471 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:13:01,471 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:13:01,471 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:13:01,473 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-19 00:13:01,473 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-19 00:13:01,496 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-19 00:13:01,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2023-02-19 00:13:01,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:01,500 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:01,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-02-19 00:13:01,504 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-19 00:13:01,510 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:13:01,510 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:13:01,510 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:13:01,510 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:13:01,511 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-19 00:13:01,511 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-19 00:13:01,526 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-19 00:13:01,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2023-02-19 00:13:01,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:01,530 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:01,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-02-19 00:13:01,534 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-19 00:13:01,539 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:13:01,540 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-19 00:13:01,540 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:13:01,540 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2023-02-19 00:13:01,540 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:13:01,561 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2023-02-19 00:13:01,561 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-19 00:13:01,572 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-19 00:13:01,575 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-02-19 00:13:01,575 INFO L444 ModelExtractionUtils]: 4 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-19 00:13:01,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:01,576 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:01,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-02-19 00:13:01,580 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-19 00:13:01,580 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-19 00:13:01,580 INFO L513 LassoAnalysis]: Proved termination. [2023-02-19 00:13:01,580 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2023-02-19 00:13:01,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:01,583 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-19 00:13:01,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:13:01,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-19 00:13:01,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:13:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:13:01,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-19 00:13:01,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:13:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-19 00:13:01,640 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2023-02-19 00:13:01,640 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:01,671 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 45 states and 62 transitions. Complement of second has 8 states. [2023-02-19 00:13:01,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-02-19 00:13:01,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:01,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2023-02-19 00:13:01,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 6 letters. Loop has 5 letters. [2023-02-19 00:13:01,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:01,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 11 letters. Loop has 5 letters. [2023-02-19 00:13:01,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:01,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 6 letters. Loop has 10 letters. [2023-02-19 00:13:01,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:01,673 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 62 transitions. [2023-02-19 00:13:01,674 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-19 00:13:01,674 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 29 states and 38 transitions. [2023-02-19 00:13:01,674 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2023-02-19 00:13:01,674 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-02-19 00:13:01,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 38 transitions. [2023-02-19 00:13:01,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-19 00:13:01,674 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 38 transitions. [2023-02-19 00:13:01,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 38 transitions. [2023-02-19 00:13:01,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2023-02-19 00:13:01,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:01,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2023-02-19 00:13:01,676 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 32 transitions. [2023-02-19 00:13:01,676 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 32 transitions. [2023-02-19 00:13:01,676 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-02-19 00:13:01,676 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 32 transitions. [2023-02-19 00:13:01,676 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-19 00:13:01,676 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-19 00:13:01,676 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-19 00:13:01,677 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 1, 1, 1, 1] [2023-02-19 00:13:01,677 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-19 00:13:01,677 INFO L748 eck$LassoCheckResult]: Stem: 671#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 672#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 662#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 664#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 678#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 676#L23 assume !(main_~q~0#1 < main_~p~0#1); 677#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 683#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 682#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 681#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 679#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 668#L26-2 [2023-02-19 00:13:01,677 INFO L750 eck$LassoCheckResult]: Loop: 668#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 667#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 668#L26-2 [2023-02-19 00:13:01,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:01,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1606994734, now seen corresponding path program 6 times [2023-02-19 00:13:01,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:13:01,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402621937] [2023-02-19 00:13:01,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:13:01,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:13:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:01,682 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:13:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:01,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:13:01,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:01,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 3 times [2023-02-19 00:13:01,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:13:01,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194476728] [2023-02-19 00:13:01,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:13:01,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:13:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:01,687 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:13:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:01,688 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:13:01,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:01,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1866286831, now seen corresponding path program 7 times [2023-02-19 00:13:01,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:13:01,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836611957] [2023-02-19 00:13:01,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:13:01,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:13:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:01,693 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:13:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:13:01,697 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:13:01,698 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:13:01,698 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:13:01,698 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:13:01,698 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:13:01,698 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-19 00:13:01,698 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,698 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:13:01,699 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:13:01,699 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration7_Loop [2023-02-19 00:13:01,699 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:13:01,699 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:13:01,699 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:01,700 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:01,701 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:01,703 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:13:01,703 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-19 00:13:01,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:01,704 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:01,729 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:13:01,729 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:13:01,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-02-19 00:13:01,740 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:13:01,740 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:13:01,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:01,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:01,753 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:01,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-02-19 00:13:01,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:13:01,756 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:13:01,773 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:13:01,773 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:13:01,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:01,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:01,777 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:01,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-02-19 00:13:01,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:13:01,780 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:13:01,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:01,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:01,798 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:01,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-02-19 00:13:01,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-19 00:13:01,801 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:13:01,816 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-19 00:13:01,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2023-02-19 00:13:01,821 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:13:01,821 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:13:01,821 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:13:01,821 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:13:01,821 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-19 00:13:01,821 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,821 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:13:01,821 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:13:01,821 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration7_Loop [2023-02-19 00:13:01,821 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:13:01,821 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:13:01,822 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:01,827 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:01,827 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:13:01,830 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:13:01,830 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-19 00:13:01,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:01,831 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:01,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-02-19 00:13:01,834 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-19 00:13:01,839 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:13:01,840 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:13:01,840 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:13:01,840 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:13:01,841 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-19 00:13:01,841 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-19 00:13:01,843 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-19 00:13:01,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:01,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:01,847 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:01,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2023-02-19 00:13:01,850 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-19 00:13:01,855 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:13:01,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:13:01,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:13:01,856 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:13:01,857 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-19 00:13:01,857 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-19 00:13:01,873 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-19 00:13:01,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2023-02-19 00:13:01,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:01,876 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:01,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-02-19 00:13:01,881 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-19 00:13:01,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:13:01,886 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-19 00:13:01,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:13:01,887 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-02-19 00:13:01,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:13:01,889 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-02-19 00:13:01,889 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-19 00:13:01,913 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-19 00:13:01,920 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-19 00:13:01,920 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-19 00:13:01,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:13:01,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:13:01,928 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:13:01,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-02-19 00:13:01,931 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-19 00:13:01,931 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-19 00:13:01,931 INFO L513 LassoAnalysis]: Proved termination. [2023-02-19 00:13:01,931 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2023-02-19 00:13:01,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:01,942 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-19 00:13:01,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:13:01,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-19 00:13:01,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:13:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:13:01,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-19 00:13:01,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:13:01,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-19 00:13:01,965 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-19 00:13:01,965 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:01,972 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 40 transitions. Complement of second has 5 states. [2023-02-19 00:13:01,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-19 00:13:01,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:01,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-02-19 00:13:01,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 2 letters. [2023-02-19 00:13:01,973 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:01,973 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-19 00:13:01,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:13:01,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-19 00:13:01,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:13:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:13:01,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-19 00:13:01,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:13:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-19 00:13:01,995 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-19 00:13:01,996 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:02,001 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 40 transitions. Complement of second has 5 states. [2023-02-19 00:13:02,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-19 00:13:02,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:02,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-02-19 00:13:02,002 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 2 letters. [2023-02-19 00:13:02,002 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:02,002 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-19 00:13:02,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:13:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:13:02,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-19 00:13:02,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:13:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:13:02,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-19 00:13:02,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:13:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-19 00:13:02,022 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-19 00:13:02,022 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:02,029 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 47 transitions. Complement of second has 4 states. [2023-02-19 00:13:02,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-19 00:13:02,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:13:02,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2023-02-19 00:13:02,030 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 2 letters. [2023-02-19 00:13:02,030 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:02,030 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 13 letters. Loop has 2 letters. [2023-02-19 00:13:02,030 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:02,030 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 4 letters. [2023-02-19 00:13:02,030 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:13:02,030 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 47 transitions. [2023-02-19 00:13:02,031 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-19 00:13:02,031 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2023-02-19 00:13:02,031 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-19 00:13:02,031 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-19 00:13:02,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-19 00:13:02,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-19 00:13:02,031 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-19 00:13:02,031 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-19 00:13:02,031 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-19 00:13:02,031 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-02-19 00:13:02,031 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-19 00:13:02,031 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-19 00:13:02,031 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-19 00:13:02,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.02 12:13:02 BoogieIcfgContainer [2023-02-19 00:13:02,036 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-19 00:13:02,037 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-19 00:13:02,037 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-19 00:13:02,037 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-19 00:13:02,037 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 12:12:58" (3/4) ... [2023-02-19 00:13:02,039 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-19 00:13:02,039 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-19 00:13:02,039 INFO L158 Benchmark]: Toolchain (without parser) took 3505.32ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 77.1MB in the beginning and 42.0MB in the end (delta: 35.2MB). Peak memory consumption was 60.0MB. Max. memory is 16.1GB. [2023-02-19 00:13:02,039 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 92.3MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-19 00:13:02,039 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.78ms. Allocated memory is still 115.3MB. Free memory was 76.8MB in the beginning and 67.5MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-19 00:13:02,040 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.21ms. Allocated memory is still 115.3MB. Free memory was 67.5MB in the beginning and 66.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-19 00:13:02,040 INFO L158 Benchmark]: Boogie Preprocessor took 11.19ms. Allocated memory is still 115.3MB. Free memory was 65.9MB in the beginning and 65.2MB in the end (delta: 675.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-19 00:13:02,040 INFO L158 Benchmark]: RCFGBuilder took 182.87ms. Allocated memory is still 115.3MB. Free memory was 64.9MB in the beginning and 56.9MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-02-19 00:13:02,040 INFO L158 Benchmark]: BuchiAutomizer took 3119.98ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 56.9MB in the beginning and 42.0MB in the end (delta: 14.9MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2023-02-19 00:13:02,040 INFO L158 Benchmark]: Witness Printer took 2.11ms. Allocated memory is still 138.4MB. Free memory is still 42.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-19 00:13:02,041 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 92.3MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 164.78ms. Allocated memory is still 115.3MB. Free memory was 76.8MB in the beginning and 67.5MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.21ms. Allocated memory is still 115.3MB. Free memory was 67.5MB in the beginning and 66.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.19ms. Allocated memory is still 115.3MB. Free memory was 65.9MB in the beginning and 65.2MB in the end (delta: 675.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 182.87ms. Allocated memory is still 115.3MB. Free memory was 64.9MB in the beginning and 56.9MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 3119.98ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 56.9MB in the beginning and 42.0MB in the end (delta: 14.9MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. * Witness Printer took 2.11ms. Allocated memory is still 138.4MB. Free memory is still 42.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function q and consists of 5 locations. One deterministic module has affine ranking function p and consists of 4 locations. One deterministic module has affine ranking function q and consists of 3 locations. One deterministic module has affine ranking function q and consists of 5 locations. One nondeterministic module has affine ranking function p and consists of 4 locations. One nondeterministic module has affine ranking function q and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 8 iterations. TraceHistogramMax:4. Analysis of lassos took 2.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 19 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 80 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 73 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 124 IncrementalHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 63 mSDtfsCounter, 124 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT6 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital29 mio100 ax144 hnf100 lsp69 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq154 hnf95 smp100 dnf203 smp100 tf102 neg95 sie125 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 50ms VariablesStem: 0 VariablesLoop: 6 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 0 MotzkinApplications: 8 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-02-19 00:13:02,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:02,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-02-19 00:13:02,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE